EP3331974B1 - Verwendung von schmiermittelzusammensetzungen zur verhinderung oder verringerung der vorzündung in einem motor - Google Patents

Verwendung von schmiermittelzusammensetzungen zur verhinderung oder verringerung der vorzündung in einem motor Download PDF

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Publication number
EP3331974B1
EP3331974B1 EP16750763.1A EP16750763A EP3331974B1 EP 3331974 B1 EP3331974 B1 EP 3331974B1 EP 16750763 A EP16750763 A EP 16750763A EP 3331974 B1 EP3331974 B1 EP 3331974B1
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pag
ignition
engine
lubricating composition
use according
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French (fr)
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EP3331974A1 (de
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Nicolas Obrecht
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TotalEnergies Marketing Services SA
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Total Marketing Services SA
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/24—Polyethers
    • C10M145/26—Polyoxyalkylenes
    • C10M145/36—Polyoxyalkylenes etherified
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
    • C10M107/30—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M107/32—Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
    • C10M107/34—Polyoxyalkylenes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/24—Polyethers
    • C10M145/26—Polyoxyalkylenes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/24—Polyethers
    • C10M145/26—Polyoxyalkylenes
    • C10M145/30—Polyoxyalkylenes of alkylene oxides containing 3 carbon atoms only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/24—Polyethers
    • C10M145/26—Polyoxyalkylenes
    • C10M145/32—Polyoxyalkylenes of alkylene oxides containing 4 or more carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/24—Polyethers
    • C10M145/26—Polyoxyalkylenes
    • C10M145/34—Polyoxyalkylenes of two or more specified different types
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
    • C10M2209/1045—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
    • C10M2209/1055—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/106—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/106—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only
    • C10M2209/1065—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/107—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/107—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106
    • C10M2209/1075—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106 used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
    • C10M2209/1085—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines
    • C10N2040/255—Gasoline engines

Definitions

  • the invention relates to the use of a lubricating composition for preventing or reducing pre-ignition in an engine. More particularly, the invention relates to the use of a lubricating composition comprising at least one base oil and at least one polyalkylene glycol (PAG) for preventing or reducing pre-ignition in an engine, preferably in a vehicle engine. , in particular of a motor vehicle.
  • PAG polyalkylene glycol
  • the present invention also relates to a method for preventing or reducing pre-ignition in an engine, preferably in an engine of a vehicle, in particular of a motor vehicle, using this lubricating composition.
  • the present invention also relates to the use of a polyalkylene glycol (PAG) in a lubricating composition for preventing or reducing pre-ignition in an engine, preferably in an engine of vehicles, in particular of motor vehicles.
  • PAG polyalkylene glycol
  • normal combustion in a spark ignition engine occurs when a mixture of fuel, especially fuel and air is ignited in the combustion chamber inside the cylinder by the production of a spark from a spark plug.
  • Such normal combustion is generally characterized by the expansion of the flame front through the combustion chamber in an orderly and controlled manner.
  • the air / fuel mixture can be prematurely ignited by an ignition source before ignition by the spark from the spark plug, which leads to a phenomenon known as pre-ignition.
  • pre-ignition it is preferable to reduce or even eliminate the pre-ignition, because this generally results in the presence of a strong increase in temperatures and pressures in the combustion chamber, and thus have a significant negative impact on efficiency. and the overall performance of an engine. Additionally, pre-ignition can cause significant damage to the cylinders, pistons, spark plugs and valves in the engine and in some cases can even result in engine failure or even engine breakage.
  • LSPI Low Speed Pre-Ignition in English or "LSPI”
  • LSPI typically occurs at low speeds and high loads, and can cause serious damage to pistons and / or cylinders. This phenomenon is described in particular by Dahnz et al (SAE Int.J. Engines, volume 3, issue 1, 2010-01-0355 ).
  • Requirement WO 2015023559 describes a method for reducing pre-ignition by adding, in a lubricant, an additive making it possible to delay ignition, said additive being chosen from organic compounds comprising at least one aromatic nucleus.
  • an additive making it possible to delay ignition
  • said additive being chosen from organic compounds comprising at least one aromatic nucleus.
  • these light organic compounds could cause an excessive increase in the volatility of the lubricant.
  • An objective of the present invention is therefore to provide compounds as well as a lubricating composition comprising these compounds which overcome all or part of the above-mentioned drawbacks.
  • Another objective of the present invention is to provide a lubricating composition making it possible to prevent or reduce pre-ignition in an engine and the formulation of which is easy to use.
  • Another objective of the present invention is to provide a lubricating composition making it possible to prevent or reduce pre-ignition in an engine while retaining satisfactory or even improved lubricating properties.
  • Another object of the present invention is to provide a lubrication method making it possible to prevent or reduce pre-ignition in an engine.
  • the invention thus relates to the use of a lubricating composition
  • a lubricating composition comprising at least one base oil and at least one polyalkylene glycol (PAG) obtained by polymerization or copolymerization of alkylene oxides comprising from 3 to 8 carbon atoms. , including at least one butylene oxide to prevent or reduce pre-ignition in an engine.
  • PAG polyalkylene glycol
  • the Applicant has observed that the presence of at least one PAG obtained by polymerization or copolymerization of alkylene oxides comprising from 3 to 8 carbon atoms, of which at least one butylene oxide in a lubricating composition allows the lubricating composition, once implemented in an engine, to prevent or reduce pre-ignition in the engine.
  • the present invention makes it possible to formulate lubricating compositions exhibiting both good stability and good properties for preventing or reducing pre-ignition once used in an engine.
  • the lubricating compositions according to the invention exhibit good properties for preventing or reducing pre-ignition once used in an engine without needing to combine them with other technical solutions making it possible to prevent or reduce pre-ignition. ignition, and in particular technical solutions requiring a reduction in the calcium content or leading to an excessive increase in the volatility of the lubricating composition.
  • the lubricating compositions according to the invention exhibit good properties for preventing or reducing pre-ignition once used in an engine and the formulation of which is easy to use.
  • the content by weight of PAG, relative to the total weight of the lubricating composition ranges from 5 to 50%, preferably from 10 to 40%, advantageously from 15 to 30%.
  • the lubricating composition further comprises an additive chosen from friction modifiers, detergents, anti-wear additives, extreme pressure additives, viscosity index improvers, dispersants, antioxidants, pour point improvers, defoamers, thickeners, and mixtures thereof.
  • the lubricating composition is used to prevent or reduce pre-ignition in a vehicle engine, preferably a motor vehicle.
  • the lubricating composition is used to prevent or reduce low speed pre-ignition (LSPI) in an engine, preferably of a vehicle, advantageously of a motor vehicle.
  • LSPI low speed pre-ignition
  • the invention also relates to a method for preventing or reducing pre-ignition in an engine, said method comprising at least one step of bringing a mechanical part of the engine into contact with a lubricating composition as defined above.
  • the invention also relates to the use of a polyalkylene glycol (PAG) according to the invention in a lubricating composition comprising at least one base oil for preventing or reducing pre-ignition in an engine.
  • PAG polyalkylene glycol
  • the lubricating composition used according to the invention comprises at least one polyalkylene gycol (PAG) obtained by polymerization or copolymerization of alkylene oxides comprising from 3 to 8 carbon atoms, including at least one butylene oxide.
  • PAG polyalkylene gycol
  • the PAG can be a polymer or a copolymer (random or block) of alkylene oxides, which can in particular be prepared according to the methods described in the application.
  • WO 2009/134716 page 2 line 26 to page 4 line 12, for example by attacking an alcohol initiator on the epoxy bond of an alkylene oxide and propagating the reaction.
  • the PAG is obtained by polymerization or copolymerization of alkylene oxides comprising from 3 to 8 carbon atoms, including at least one butylene oxide, in particular chosen from 1,2-oxide butylene or 2,3-butylene oxide, preferably 1,2-butylene oxide.
  • copolymers of butylene oxide and of propylene oxide are particularly preferred.
  • PAGs can be prepared by reacting one or more alcohols with a mixture of butylene oxide and propylene oxide.
  • the PAGs are prepared with a mixture of butylene oxide and propylene oxide where the mass ratio between butylene oxide and propylene oxide is a value ranging from 3: 1 to 1: 3, from preferably ranging from 3: 1 to 1: 1.
  • the PAGs are prepared from alcohol having 8 to 12 carbon atoms. 2-ethylhexanol and dodecanol, alone or as a mixture, and in particular dodecanol, are particularly preferred.
  • the AGPs according to the invention are such that their carbon to oxygen molar ratio is greater than 3: 1, preferably ranging from 3: 1 to 6: 1. This in particular gives said PAG properties of polarity and viscosity index which are particularly suitable for use in engine oil.
  • the PAGs are prepared with a mixture of butylene oxide and propylene oxide where the mass ratio between butylene oxide and propylene oxide is greater than 3: 1, preferably greater than 5: 1, more preferably greater than 8: 1, advantageously ranging from 8: 1 to 10: 1.
  • the PAG is obtained by polymerization of butylene oxides only, in particular chosen from 1,2-butylene oxide or 2,3-butylene oxide, preferably 1, 2-butylene oxide.
  • the groups R 2x-1 and R 2x represent, independently of one another, a linear C 1 -C 6 alkyl group.
  • At least one of the groups R 2x-1 and R 2x represents a hydrogen atom.
  • R 2x represents a hydrogen atom.
  • the sum of the numbers of carbon atoms of R 2x-1 and R 2x is of a value ranging from 1 to 6 and the sum of the numbers of carbon atoms of R 2x-1 and R 2x is equal to 2 for at least one value of x.
  • the PAGs are preferably light PAGs characterized by a kinematic viscosity measured at 100 ° C. according to the ASTM D445 standard ranging from 1 to 12 mm 2 / s, preferably from 2 to 7 mm 2 / s.
  • the viscosity index (Viscosity Index in English or VI measured according to the NFT 60136 standard) of the PAGs used in the invention is greater than or equal to 100, preferably greater than or equal to 120.
  • the lubricating composition used according to the invention comprises a content by weight of PAG, relative to the total weight of the lubricating composition, ranging from 5 to 50%, preferably from 10 to 40%, advantageously from 15 to 30 %.
  • PAGs which can be used in the lubricating composition used according to the invention, mention may be made of the PAGs described in the documents WO 2012/070007 or WO 2013/164457 .
  • the lubricating composition used according to the invention also comprises at least one base oil.
  • the lubricating composition used according to the invention can comprise any type of mineral, synthetic or natural, animal or plant lubricating base oil, known to those skilled in the art.
  • the base oils used in the lubricating compositions according to the invention can be oils of mineral or synthetic origins belonging to groups I to V according to the classes defined in the API classification (or their equivalents according to the ATIEL classification) (table A). or their mixtures.
  • Table A ⁇ /u> Saturated content Sulfur content Viscosity index (VI) Group I Mineral oils ⁇ 90% > 0.03% 80 ⁇ VI ⁇ 120 Group II Hydrocracked oils ⁇ 90% ⁇ 0.03% 80 ⁇ VI ⁇ 120 Group III Hydrocracked or hydroisomerized oils ⁇ 90% ⁇ 0.03% ⁇ 120 Grouping IV
  • PAO Polyalphaolefins
  • the mineral base oils according to the invention include all types of base oils obtained by atmospheric and vacuum distillation of crude oil, followed by refining operations such as solvent extraction, dealphating, solvent dewaxing, hydrotreatment, hydrocracking. , hydroisomerization and hydrofinishing.
  • Mixtures of synthetic and mineral oils can also be used.
  • lubricating bases there is generally no limitation as to the use of different lubricating bases to produce the lubricating compositions used according to the invention, except that they must have properties, in particular of viscosity, viscosity index, content of sulfur, oxidation resistance, suitable for use in engines or for vehicle transmissions.
  • the base oils of the lubricating compositions used according to the invention can also be chosen from synthetic oils, such as certain esters of carboxylic acids and alcohols, and from polyalphaolefins.
  • the polyalphaolefins used as base oils are for example obtained from monomers comprising from 4 to 32 carbon atoms, for example from octene or decene, and whose viscosity at 100 ° C is between 1.5 and 15 mm 2 .s -1 according to ASTM D445.
  • Their average molecular mass is generally between 250 and 3000 according to the ASTM D5296 standard.
  • the base oils of the present invention are chosen from the above base oils whose aromatic content is between 0 and 45%, preferably between 0 and 30%.
  • the aromatic content of oils is measured according to the UV Burdett method.
  • the lubricating composition used according to the invention comprises at least 50% by weight of base oils relative to the total weight of the composition.
  • the lubricating composition used according to the invention comprises at least 60% by mass, or even at least 70% by mass, of base oils relative to the total mass of the composition.
  • the lubricating composition used according to the invention comprises from 60 to 99.5% by mass of base oils, preferably from 70 to 99.5% by mass of base oils, relative to the total mass of the composition.
  • the preferred additives for the lubricating composition used according to the invention are chosen from friction modifiers, detergents, anti-wear additives, extreme pressure additives, viscosity index improvers, dispersants, antioxidants, pour point improvers, defoamers, thickeners and mixtures thereof.
  • the lubricating composition used according to the invention comprises at least one anti-wear additive, at least one extreme pressure additive or their mixtures.
  • Antiwear additives and extreme pressure additives protect rubbing surfaces by forming a protective film adsorbed on these surfaces.
  • the anti-wear additives are chosen from phosphosulfur additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or ZnDTP.
  • phosphosulfur additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or ZnDTP.
  • the preferred compounds are of formula Zn ((SP (S) (OR 2 ) (OR 3 )) 2 , in which R 2 and R 3 , identical or different, independently represent an alkyl group, preferably an alkyl group comprising from 1 to 18 carbon atoms.
  • Amine phosphates are also anti-wear additives which can be used in the lubricating composition according to the invention.
  • the phosphorus provided by these additives can act as a poison in the catalytic systems of automobiles because these additives generate ash.
  • additives which do not provide phosphorus such as, for example, polysulfides, in particular sulfur-containing olefins.
  • the lubricating composition according to the invention can comprise from 0.01 to 6% by mass, preferably from 0.05 to 4% by mass, more preferably from 0.1 to 2% by mass relative to the mass total lubricant composition, antiwear additives and extreme pressure additives.
  • the lubricating composition according to the invention can comprise at least one friction modifying additive.
  • the friction modifier additive can be chosen from a compound providing metallic elements and an ash-free compound.
  • the compounds providing metallic elements mention may be made of transition metal complexes such as Mo, Sb, Sn, Fe, Cu, Zn, the ligands of which may be hydrocarbon compounds comprising oxygen, nitrogen or carbon atoms. sulfur or phosphorus.
  • the ash-free friction modifying additives are generally of organic origin and can be chosen from fatty acid monoesters and polyols, alkoxylated amines, alkoxylated fatty amines, fatty epoxides, borate fatty epoxides; fatty amines or fatty acid glycerol esters.
  • the fatty compounds comprise at least one hydrocarbon group comprising from 10 to 24 carbon atoms.
  • the lubricating composition according to the invention can comprise from 0.01 to 2% by mass or from 0.01 to 5% by mass, preferably from 0.1 to 1.5% by mass or from 0.1 at 2% by mass relative to the total mass of the lubricating composition, of friction modifier additive.
  • the lubricating composition according to the invention can comprise at least one antioxidant additive.
  • the antioxidant additive generally makes it possible to delay the degradation of the lubricant composition in service. This degradation can in particular result in the formation of deposits, the presence of sludge or an increase in the viscosity of the lubricating composition.
  • Antioxidant additives act in particular as radical inhibitors or destroyers of hydroperoxides.
  • antioxidant additives commonly used, there may be mentioned antioxidant additives of phenolic type, antioxidant additives of amine type, phosphosulfurized antioxidant additives. Some of these antioxidant additives, for example phosphosulfurized antioxidant additives, can generate ash.
  • the phenolic antioxidant additives can be ash-free or in the form of neutral or basic metal salts.
  • the antioxidant additives can in particular be chosen from sterically hindered phenols, sterically hindered phenol esters and sterically hindered phenols comprising a thioether bridge, diphenylamines, diphenylamines substituted with at least one C 1 -C 12 alkyl group, N , N'-dialkyl-aryl-diamines and mixtures thereof.
  • the sterically hindered phenols are chosen from compounds comprising a phenol group of which at least one carbon vicinal of the carbon carrying the alcohol function is substituted by at least one C 1 - C 10 alkyl group, preferably one.
  • C 1 -C 6 alkyl group preferably a C 4 alkyl group, preferably through the tert-butyl group.
  • Amino compounds are another class of antioxidant additives that can be used, optionally in combination with phenolic antioxidant additives.
  • Examples of amino compounds are aromatic amines, for example aromatic amines of formula NR 4 R 5 R 6 in which R 4 represents an aliphatic group or an aromatic group, optionally substituted, R 5 represents an aromatic group, optionally substituted, R 6 represents a hydrogen atom, an alkyl group, an aryl group or a group of formula R 7 S (O) z R 8 in which R 7 represents an alkylene group or an alkenylene group, R 8 represents an alkyl group, a alkenyl group or an aryl group and z represents 0, 1 or 2.
  • Sulfurized alkyl phenols or their alkali and alkaline earth metal salts can also be used as antioxidant additives.
  • antioxidant additives are that of copper compounds, for example copper thio- or dithio-phosphates, copper and carboxylic acid salts, dithiocarbamates, sulphonates, phenates, copper acetylacetonates. Copper I and II salts, salts of succinic acid or anhydride can also be used.
  • copper compounds for example copper thio- or dithio-phosphates, copper and carboxylic acid salts, dithiocarbamates, sulphonates, phenates, copper acetylacetonates.
  • Copper I and II salts, salts of succinic acid or anhydride can also be used.
  • the lubricating composition according to the invention can contain all types of antioxidant additives known to those skilled in the art.
  • the lubricating composition comprises at least one antioxidant additive free of ash.
  • the lubricating composition according to the invention comprises from 0.5 to 2% by weight relative to the total mass of the composition, of at least one antioxidant additive.
  • the lubricating composition according to the invention can also comprise at least one detergent additive.
  • Detergent additives generally make it possible to reduce the formation of deposits on the surface of metal parts by dissolving the by-products of oxidation and combustion.
  • detergent additives which can be used in the lubricating composition according to the invention are generally known to those skilled in the art.
  • Detergent additives can be anionic compounds comprising a long lipophilic hydrocarbon chain and a hydrophilic head.
  • the associated cation can be a metal cation of an alkali or alkaline earth metal.
  • the detergent additives are preferably chosen from alkali metal or alkaline earth metal salts of carboxylic acids, sulphonates, salicylates, naphthenates, as well as salts of phenates.
  • the alkali metals and alkaline earth metals are preferably calcium, magnesium, sodium or barium.
  • metal salts generally include the metal in a stoichiometric amount or else in excess, therefore in an amount greater than the stoichiometric amount.
  • overbased detergent additives the excess metal providing the overbased character to the detergent additive is then generally in the form of a metal salt insoluble in oil, for example a carbonate, a hydroxide, an oxalate, an acetate, a glutamate, preferably a carbonate .
  • the lubricating composition according to the invention can comprise from 2 to 4% by weight of detergent additive relative to the total mass of the lubricating composition. Also advantageously, the lubricating composition according to the invention can also comprise at least one pour point reducing additive.
  • the pour point lowering additives By slowing down the formation of paraffin crystals, the pour point lowering additives generally improve the cold behavior of the lubricating composition according to the invention.
  • pour point lowering additives mention may be made of polymethacrylates of alkyl, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes, alkylated polystyrenes.
  • the lubricating composition according to the invention can also comprise at least one dispersing agent.
  • the dispersing agent can be chosen from Mannich bases, succinimides and their derivatives.
  • the lubricating composition according to the invention can comprise from 0.2 to 10% by mass of dispersing agent relative to the total mass of the lubricating composition.
  • the lubricating composition of the present invention can also comprise at least one additive improving the viscosity index.
  • additives improving the viscosity index mention may be made of polymer esters, homopolymers or copolymers, hydrogenated or non-hydrogenated, of styrene, butadiene and isoprene, polyacrylates, polymethacrylates (PMA). or else olefin copolymers, in particular ethylene / propylene copolymers.
  • the lubricating composition according to the invention can be in different forms.
  • the lubricating composition according to the invention can in particular be an anhydrous composition.
  • this lubricating composition is not an emulsion.
  • the lubricating composition defined above is used to prevent or reduce pre-ignition in an engine.
  • engine according to the invention is also meant 4-stroke engines, and more specifically 4-stroke marine engines, preferably 4-stroke marine engines operating on gas.
  • the lubricating composition is used to prevent or reduce pre-ignition in a vehicle engine, preferably a motor vehicle.
  • pre-ignition we include the phenomenon of low frequency vibration producing a sound effect of snoring (or "rumble" in English).
  • pre-ignition according to the invention more particularly means low-speed pre-ignition (LSPI).
  • the lubricating composition is used for preventing or reducing low speed pre-ignition (LSPI) in an engine, preferably in a vehicle engine, advantageously of a motor vehicle.
  • LSPI low speed pre-ignition
  • a subject of the invention is also a method for preventing or reducing pre-ignition in an engine, said method comprising at least one step of bringing a mechanical part of the engine into contact with a lubricating composition as defined above.
  • a subject of the invention is also the use of a polyalkylene glycol (PAG) obtained by polymerization or copolymerization of alkylene oxides comprising from 3 to 8 carbon atoms, including at least one butylene oxide in a lubricating composition comprising at least one base oil to prevent or reduce pre-ignition in an engine.
  • PAG polyalkylene glycol

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Lubricants (AREA)

Claims (9)

  1. Verwendung einer Schmiermittelzusammensetzung, enthaltend mindestens ein Basisöl und mindestens ein Polyalkylenglykol (PAG), das durch Polymerisation oder Copolymerisation von Alkylenoxiden, die 3 bis 8 Kohlenstoffatome enthalten, davon mindestens ein Butylenoxid, erhalten wird, zum Verhindern oder Verringern der Vorentflammung in einem Motor.
  2. Verwendung nach Anspruch 1, bei der das PAG ein PAG der Formel (A) ist
    Figure imgb0007
     wobei
    - Y1 und Y2, unabhängig voneinander, ein Wasserstoffatom oder eine Kohlenwasserstoffgruppe, vorzugsweise eine C1-C30 Alkyl- oder Alkylphenylgruppe sind,
    - n eine ganze Zahl größer oder gleich 2, vorzugsweise kleiner als 500, bevorzugter zwischen 2 und 200, noch bevorzugter zwischen 2 und 60 oder 5 und 30, vorteilhafterweise zwischen 7 und 15 darstellt,
    - x eine oder mehrere ganze Zahlen von 1 bis n darstellt,
    - die Gruppen R2x-1 und R2x, unabhängig voneinander, ein Wasserstoffatom oder eine Kohlenwasserstoffgruppe, die zwischen 1 bis 6 Kohlenstoffatome enthält, vorzugsweise eine lineare oder verzweigte C1-C6 Alkylgruppe darstellen, wobei die Summe der Anzahl von Kohlenstoffatomen von R2x-1 und R2x gleich 2 für mindestens einen Wert von x ist.
  3. Verwendung nach Anspruch 1 oder 2, bei der das PAG ein PAG der Formel (A) ist, in der:
    - Y2 ein Wasserstoffatom darstellt;
    - R2x-1 und R2x, identisch oder unterschiedlich, unabhängig ein Wasserstoffatom oder eine C1-C6 Alkylgruppe darstellen.
  4. Verwendung nach einem beliebigen der vorhergehenden Ansprüche, bei der das PAG ein PAG der Formel (B) ist,
    Figure imgb0008
     in der
    • R1 eine lineare oder verzweigte C1-C6 Alkylgruppe darstellt;
    • p eine Zahl von 2 bis 10, vorzugsweise von 2 bis 6 darstellt;
    • q eine Zahl von 2 bis 10, vorzugsweise von 2 bis 6 darstellt.
  5. Verwendung nach einem beliebigen der vorhergehenden Ansprüche, bei der der Gehalt von PAG in Gewichtsprozenten in Bezug auf die Gesamtmasse der Schmiermittelzusammensetzung, von 5 bis 50 %, vorzugsweise von 10 bis 40 %, vorteilhafterweise von 15 bis 30 % ist.
  6. Verwendung nach einem beliebigen der vorhergehenden Ansprüche, bei der die Schmiermittelzusammensetzung außerdem einen Zusatzstoff enthält, der ausgewählt ist aus Reibmodifikatoren, Detergenzien, verschleißfesten Additiva, Hochdruck-Additiva, Viskositätsindex-Verbesserern, Dispergiermitteln, Antioxidantien, Stockpunktverbesserern, Entschäumungsmitteln, Verdickungsmitteln und ihren Mischungen.
  7. Verwendung nach einem beliebigen der vorhergehenden Ansprüche zum Verhindern oder Verringern der Vorentflammung in einem Motor eines Fahrzeugs, vorzugsweise eines Kraftfahrzeugs.
  8. Verwendung nach einem beliebigen der vorhergehenden Ansprüche zum Verhindern oder Verringern der Vorentflammung in einem Motor bei niedriger Geschwindigkeit eines Fahrzeugs, vorzugsweise eines Kraftfahrzeugs.
  9. Verwendung mindestens eines Polyalkylenglykols (PAG), das durch Polymerisation oder Copolymerisation von Alkylenoxiden, die 3 bis 8 Kohlenstoffatome enthalten, davon mindestens ein Butylenoxid, erhalten wird, in einer Schmiermittelzusammensetzung, enthaltend mindestens ein Basisöl, zum Verhindern oder Verringern der Vorentflammung in einem Motor.
EP16750763.1A 2015-08-06 2016-08-05 Verwendung von schmiermittelzusammensetzungen zur verhinderung oder verringerung der vorzündung in einem motor Active EP3331974B1 (de)

Applications Claiming Priority (2)

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FR1557591A FR3039834B1 (fr) 2015-08-06 2015-08-06 Compositions lubrifiantes pour prevenir ou diminuer le pre-allumage dans un moteur
PCT/EP2016/068719 WO2017021521A1 (fr) 2015-08-06 2016-08-05 Compositions lubrifiantes pour prevenir ou diminuer le pre-allumage dans un moteur

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EP3732273B1 (de) 2017-12-25 2024-05-08 Dow Global Technologies LLC Schmiermittel mit modifiziertem öllöslichen polyalkylenglykol
FR3092335B1 (fr) 2019-02-04 2021-04-30 Total Marketing Services Composition lubrifiante pour prévenir le pré-allumage
FR3092337B1 (fr) 2019-02-04 2021-04-23 Total Marketing Services Composition lubrifiante pour prévenir le pré-allumage
FR3093110B1 (fr) 2019-02-25 2021-05-21 Total Marketing Services Composition lubrifiante pour prévenir ou diminuer le pré-allumage dans un moteur

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US3211652A (en) * 1962-12-03 1965-10-12 Ethyl Corp Phenolic compositions
US8969271B2 (en) 2009-07-23 2015-03-03 Dow Global Technologies Llc Polyakylene glycols useful as lubricant additives for groups I-IV hydrocarbon oils
FR2968011B1 (fr) * 2010-11-26 2014-02-21 Total Raffinage Marketing Composition lubrifiante pour moteur
EP2773731A2 (de) * 2011-11-01 2014-09-10 Dow Global Technologies LLC Öllösliche polyalkylen-glycol-schmiermittelzusammensetzung
FR2990213B1 (fr) 2012-05-04 2015-04-24 Total Raffinage Marketing Composition lubrifiante pour moteur
WO2015023559A1 (en) * 2013-08-12 2015-02-19 Shell Oil Company Methods for modifying auto-ignition properties of a base oil or lubricant composition
US11034912B2 (en) * 2014-04-29 2021-06-15 Infineum International Limited Lubricating oil compositions
US9944877B2 (en) * 2014-09-17 2018-04-17 Exxonmobil Research And Engineering Company Composition and method for preventing or reducing engine knock and pre-ignition in high compression spark ignition engines

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FR3039834B1 (fr) 2018-08-31
US20180223217A1 (en) 2018-08-09
EP3331974A1 (de) 2018-06-13
CN107922871A (zh) 2018-04-17
WO2017021521A1 (fr) 2017-02-09

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